Open Radar

 
Area:
Accessibility

Summary:
UISwitch announces "Accessibility label, on" (and then hint: "Double tap to toggle") or "Accessibility label, off". When toggling the switch, it simply announces the value "on" or "off" without re-announcing the accessibility label.

If I implement my own control, however, it always announces the accessibility label first (e.g. "Accessibility label, yes"):

Issue was discussed in:
https://lists.apple.com/archives/accessibility-dev/2017/Aug/msg00015.html

Steps to Reproduce:
class MyControl: UIControl {
    public var value: Bool = false

    override func accessibilityActivate() -> Bool {
        self.value = !self.value
        self.accessibilityValue = self.value ? "yes" : "no"
        return true
    }
}

Expected Results:
Control announces "yes" or "no" every time I double-tap.

Observed Results:
Control announces "Accessibility label, yes" or "Accessibility label, no" every time I tap it, where "Accessibility label" is the label I've assigned to the control.